WO2015012224A1

WO2015012224A1 - Power-supply connector

Info

Publication number: WO2015012224A1
Application number: PCT/JP2014/069213
Authority: WO
Inventors: 昭洋淀川
Original assignee: 株式会社ヨコオ
Priority date: 2013-07-26
Filing date: 2014-07-18
Publication date: 2015-01-29
Also published as: JP2015026539A; JP6117042B2

Abstract

The present invention enables connections at a low electrical resistance by ensuring that the contact pressure of the elastic contact of a power-supply contact is sufficiently high, and enables power to be supplied at a low cost by having an entirely integrated configuration. A power-supply connector (1) is provided with a front frame (2) and a back frame (3) on which an attachment part is integrally disposed and which is entirely formed from one conductive member, a linking part (4) for integrally linking the front frame (2) and the back frame (3), and elastic contacts (7, 8, 9) which are integrally formed to extend from one frame (2) to the other frame (3) and of which the tips are positioned in the inside of the other frame (3).

Description

Power supply connector

This invention relates to the connector for electric power feeding used for wiring connection of an electronic device etc.

The power supply connector is required to be connected to the counterpart plug with low electrical resistance in order to efficiently transmit power. In order to satisfy this requirement, it is common practice to use a plurality of contacts with the mating plug and increase the contact pressure at the contacts. 13A and 13B show an example of a conventional power feeding connector. FIG. 13A shows a state before the power supply connector 51 including the multi-contact contact conductive member 52 and the conductor housing 53 is fixed to the printed circuit board 30 and the mating plug 40 at the end of the cable 45 is inserted. It is. FIG. 13B shows a state in which the mating plug 40 is inserted, and the conductor housing 53 is shown as a half section. The conventional power feeding connector includes a multi-contact contact conductive member 52 and a conductor housing 53. The multi-contact contact conductive member 52 has a substantially cylindrical shape in which the circular rings at both ends are connected by a plurality of strips, and the plurality of strips are curved inward to form a contact with the mating plug. The conductor housing 53 slidably accommodates the ring contact portion of the multi-contact contact conductive member 52, and when the mating plug is inserted into the multi-contact contact conductive member 52, the band-like body is pushed outward. It is comprised so that the annular part of both ends can move to the direction which each separates. The conductor housing 53 is mounted on a terminal on the printed circuit board 30 by, for example, soldering.

The power feeding connector 51 including the multi-contact contact conductive member 52 and the conductor housing 53 has a special multi-contact contact in order to make a plurality of contacts with the mating plug and to increase the contact pressure at the contacts. Since the conductive member 52 is required and the conductor casing 53 that holds the multi-contact contact conductive member 52 is required, the conductive member 52 is expensive.

Further, Patent Document 1 below shows a power port terminal formed by punching and bending a metal plate, but it does not have a terminal structure that can secure a sufficient contact pressure.

The following Patent Document 2 shows a power port terminal in which a metal terminal portion is surrounded by an insulating housing. However, since an insulating housing is provided, the number of manufacturing steps increases and the cost increases.

JP 7-506694 A Special Table 2000-504149

The present invention has been made in view of such a situation, and an object of the present invention is to provide an inexpensive power connector by integrally forming a structure for connecting to a counterpart plug with low electrical resistance.

An aspect of the present invention is a power feeding connector. This power feeding connector extends from one housing to the other housing, a front housing and a rear housing, which are integrally provided with a mounting portion, a connecting portion for integrally connecting the front and rear housings to each other. It is formed of a conductive member having an elastic contact formed integrally with the other casing and having a tip positioned inside the other casing.

In the above aspect, the elastic contact may be curved so that the inside becomes a convex surface, and the tip of the elastic contact may abut against the inner surface of the other housing when the mating plug is inserted.

In the above aspect, the connecting portion may be formed with a bent portion for reducing the distance between the front and rear housings.

In the above aspect, one of the connecting portions may be a mount for positioning the mating plug.

In the above aspect, an engagement portion that engages with the mating plug may be integrally formed on the front side of the front housing.

In the above aspect, a front cover having an insertion port on the front side of the front housing is preferably formed integrally.

It should be noted that an arbitrary combination of the above-described components and a conversion of the expression of the present invention between methods and systems are also effective as an aspect of the present invention.

According to the power feeding connector of the present invention, the contact pressure of the elastic contactor is secured sufficiently high, connection with low electric resistance is possible, and low-cost supply is possible by making the whole into an integral structure. .

The perspective view which shows 1st Embodiment of the connector for electric power feeding which concerns on this invention. The perspective view which shows the state which mounted | wore the printed circuit board with the connector for electric power feeding of FIG. 1, and illustrated the other party plug. The front view of 1st Embodiment. The same side view. XX sectional drawing of FIG. The top view of 1st Embodiment. The bottom view. FIG. 4 is a relationship between the power feeding connector and the mating plug shown in the first embodiment, wherein (A) is a side sectional view showing a state before the mating plug is inserted, and (B) is when the mating plug is inserted. (C) is a plane sectional view at the time of the other party plug insertion. The perspective view which shows the 2nd Embodiment of this invention. FIG. The perspective view which shows the 3rd Embodiment of this invention. FIG. It is a prior art example, (A) is a perspective view which shows the state before insertion of the other party plug, (B) is a perspective view which made a part of connector a cross section at the time of the other party plug insertion.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same or equivalent component, member, process, etc. which are shown by each drawing, and the overlapping description is abbreviate | omitted suitably. In addition, the embodiments do not limit the invention but are exemplifications, and all features and combinations thereof described in the embodiments are not necessarily essential to the invention.

A first embodiment of a power feeding connector according to the present invention will be described with reference to FIGS. In these drawings, the power supply connector 1 is formed by punching a conductive member (for example, a metal plate such as a copper alloy) made of a single conductive flat plate and bending it. And the rear housing 3, the connecting

parts

4, 5, 6 that connect the front and

rear housings

2, 3 to each other, and the elastic contacts formed to extend from the front housing 2 toward the rear housing 3. 7, 8, and 9.

The front housing 2 is formed by being bent into a rectangular frame shape, and a front cover 10 is formed by bending downward from the upper side of the rectangular frame-shaped portion of the front housing 2 so as to cover the front surface of the front housing 2. A hook 11 as an engaging portion that engages with the side plug 40 is provided forward from both sides of the front cover 10, and a soldering lead portion 12 as an attachment portion extends downward from the lower portion of the front cover 10. It is formed as follows. Further, a soldering pad 13 as another attachment portion is formed at the lower portion of the front cover 10 by bending forward. The front cover 10 is formed with an insertion port 10 a for the plug 40. The plug 40 is electrically connected to the end portion of the cable 45, and has a cylindrical fitting portion 41 and a flange portion 42 formed on the base end side. The insertion port 10a of the front cover 10 is formed to have a larger diameter than the cylindrical fitting portion 41 of the plug 40 and a smaller diameter than the flange portion 42, and the flange 42 when the plug 40 is inserted into the insertion port 10a. Engages with the front cover 10. The hooks 11 are disposed on both the left and right sides of the front cover 10 and have a function of preventing the plug 40 from coming out by engaging with the flange portion 42 of the inserted plug 40.

The connecting

portions

4, 5, 6 are formed with bent portions for reducing the distance between the front and

rear housings

2, 3. That is, the left and right connecting

portions

4 and 5 are bent so as to protrude outward, and the connecting portion 6 is bent so as to protrude inward (upward). By reducing the distance between the front and

rear housings

2 and 3 in this manner, the

elastic contacts

7, 8 and 9 extending from the front housing 2 can enter the inside of the rear housing 3. The connecting portion 6 abuts on the mating plug 40 inserted into the power feeding connector 1 to form a mount (ridge track) for positioning in the vertical direction, and an elliptical rib 6a is formed in the longitudinal direction for reinforcement. Yes. The rib 6a is formed to be a convex portion on the surface facing the plug 40. Two ribs 6a are formed, and contact the left and right sides of the lower surface of the plug 40 to position the plug 40 in the left-right direction.

The rear housing 3 is also formed by being bent into a rectangular frame shape, and is formed so that soldering lead portions 3a as attachment portions extend downward from lower portions of the left and right side portions of the rear housing 3 respectively. The

elastic contacts

7, 8, 9 extending from the front housing 2 toward the rear housing 3 are curved so as to be convex toward the inside, and the tip is a rectangular frame-shaped portion of the rear housing 3. Located inside.

2 and 8, the power supply connector 1 is fixed to the printed board 30 by inserting the lead part 12 and the lead part 3a into the mounting holes 31 of the printed board 30 and soldering them. If the surface mounting electrode 32 is formed on the printed circuit board 30 side, the soldering pad 13 on the power feeding connector 1 side is also fixed to the surface mounting electrode 32 by soldering.

As shown in FIGS. 2 and 8 (A), the plug 40 provided at the end of the cable 45 is inserted into the rear housing 3 from the insertion port 10a of the front cover 10 of the power feeding connector 1. Electrical connection between the plug 40 and the power feeding connector 1 can be performed as shown in 8 (B) and (C). Before the plug 40 is inserted as shown in the enlarged view of FIG. 8A, the elastic contact 7 is positioned inside the rear housing 3, but is not elastically in contact with the inner surface thereof. On the other hand, when the plug 40 is inserted as shown in the enlarged view of FIG. 8B, the columnar fitting portion 41 of the plug 40 contacts the elastic contact 7 so that the elastic contact 7 faces outward. The tip of the elastic contact 7 is elastically brought into contact with the inner surface of the rear housing 3. For this reason, the elastic contactor 7 functions as a doubly-supported spring (a spring in which both ends are supported) which is substantially the same as the conventional multi-contact contact conductive member 52 whose convex surface is in contact with the plug 40. The

elastic contacts

8 and 9 also function as double-supported springs like the elastic contact 7. The function of the double-supported spring by the

elastic contacts

8 and 9 while sandwiching the cylindrical fitting portion 41 of the plug 40 from the vertical direction between the elastic contact 7 and the connecting portion 6 by the function of the double-supported spring by the elastic contact 7. Thus, the cylindrical fitting portion 41 of the plug 40 is sandwiched between the elastic contact 8 and the elastic contact 9 from the left and right directions. As a result, the power feeding connector 1 can come into contact with the plug 40 at a plurality of locations. Furthermore, it is possible to contact the cylindrical fitting portion 41 of the plug 40 with a sufficient contact pressure by the function of the double-supported springs of the respective

elastic contacts

7, 8, 9. That is, connection with low electrical resistance is possible. The hooks 11 formed on the left and right sides of the front cover 10 engage with the flange portion 42 of the inserted plug 40 to prevent the plug 40 from coming out.

According to this embodiment, the following effects can be achieved.

(1) The power feeding connector 1 is formed by punching a metal plate such as a copper alloy as a conductive member and bending it, so that the number of parts is one and it can be supplied inexpensively. It is possible and excellent in mass productivity.

(2) The connecting

portions

4, 5 and 6 connecting the front and

rear housings

2 and 3 are formed with bent portions for reducing the distance and extend from the front housing 2 toward the rear housing 3. The tips of the

elastic contacts

7, 8, 9 are located inside the rear housing 3. For this reason, when the mating plug 40 is inserted into the power supply connector 1 and is in the fitted state, the side where the tips of the

elastic contacts

7, 8, 9 are in elastic contact with the inner surface of the rear housing 3 and are in contact with the plug 40. It functions as a double-sided spring having a convex surface, and contacts the plug 40 with a sufficiently large contact pressure. As a result, it is possible to connect the plug 40 with a low electrical resistance.

(3) The saddle connecting portion 6 is a mount for positioning the mating plug 40, and can reliably regulate the position of the inserted plug 40.

(4) Since the front cover 10 having the insertion port 10a is formed on the front side of the front housing 2 and the hooks 11 as the engaging portions are formed on the left and right sides of the front cover 10, the pair of hooks 11 are plugs 40. The plug 40 can be held so as not to come off by engaging with the flange portion 42 on the side. Thereby, it becomes possible to maintain the connection body of the connector 1 for electric power feeding and the plug 40 reliably.

9 and 10, a second embodiment of the present invention will be described. The main difference between the power feeding connector 1A shown in FIGS. 9 and 10 and the power feeding connector 1 shown in the first embodiment is that the left and right connecting portions 4 communicate between the front and

rear housings

2 and 3. , 5 are provided two above and below the side portions of the front and

rear housings

2 and 3, and the soldering lead portion 12 is extended downward from the lower portion of the front housing 2. The

elastic contacts

8 and 9 are positioned between the two connecting

portions

4, 4 and 5 and 5, respectively. Other configurations are the same as those of the power supply connector 1 shown in the first embodiment.

According to the second embodiment, since the two right and left connecting

portions

4 and 5 connecting the front and

rear housings

2 and 3 are formed with the

elastic contacts

8 and 9 interposed therebetween, the strength is increased. Improvements can be made.

11 and 12, a third embodiment of the present invention will be described. The power supply connector 1B shown in FIGS. 11 and 12 is obtained by shortening the dimension in the front-rear direction of the power supply connector 1A shown in FIGS. The connecting

portions

4, 5, 6 and the

elastic contacts

7, 8, 9 between the front and

rear housings

2, 3 are shortened, and the front-rear width of the rear housing 3 is shortened. A circular convex portion 6b is formed on the surface of the connecting portion 6 serving as a mount on the surface facing the mating plug. Other configurations are the same as those of the power feeding connector 1A shown in the second embodiment.

According to the third embodiment, since the power supply connector 1B is shortened in the front-rear direction, the installation area on the printed circuit board side on which the power supply connector 1B is mounted can be reduced.

The present invention has been described above by taking the embodiment as an example. However, it is understood by those skilled in the art that various modifications can be made to each component and each processing process of the embodiment within the scope of the claims. By the way. Hereinafter, modifications will be described.

In each embodiment, the elastic contact extends from the front housing to the rear housing, but conversely extends from the rear housing to the front housing so that the tip enters the inside of the front housing. May be. Further, some of the plurality of elastic contacts may extend from the front housing to the rear housing, and the remaining elastic contacts may extend from the rear housing to the front housing. Good. The number of elastic contacts is three in each embodiment, but the number can be increased or decreased as appropriate.

1, 1A, 1B Power supply connector 2 Front housing 3

Rear housing

3a, 12

Lead portion

4, 5, 6

Connecting portion

7, 8, 9 Contact 10 Front cover 11 Hook 30 Printed circuit board 40 Plug 41 Columnar fitting portion 42 Flange 45 Cable

Claims

A front housing and a rear housing integrally provided with a mounting portion;
A connecting portion that integrally connects the front and rear housings to each other;
A power feeding connector comprising a conductive member integrally formed so as to extend from one housing to the other housing, and having an elastic contact located at the inside of the other housing .
2. The power supply according to claim 1, wherein the elastic contact is curved so that the inside is a convex surface, and a tip of the elastic contact abuts against an inner surface of the other casing when the mating plug is inserted. connector.
3. The power feeding connector according to claim 1, wherein a bent portion for reducing a distance between the front and rear housings is formed in the connecting portion.
4. The power feeding connector according to claim 1, wherein one of the connecting portions is a mount for positioning the mating plug. 5.
The power feeding connector according to any one of claims 1 to 4, wherein an engaging portion that engages with a mating plug is integrally formed on a front side of the front housing.
The power supply connector according to any one of claims 1 to 5, wherein a front cover having an insertion port is formed integrally with a front side of the front side casing.